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    NZ N 245 Multiplication Strategy Display Posters Ver 1

    Uploaded by

    Mugisha Ernest Isaac
    The document outlines several multiplication strategies including array, equal groups, repeated addition, number line, lattice/Italian, partitioning, grid method, column method, expanded column method, and multiplying by 10 and 100. The column method is demonstrated for multiplying multi-digit numbers with carrying. Place value is used to explain how to multiply numbers by 10 and 100 by moving the digits left.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    NZ N 245 Multiplication Strategy Display Posters Ver 1

    Uploaded by

    Mugisha Ernest Isaac
    127 views15 pages
    The document outlines several multiplication strategies including array, equal groups, repeated addition, number line, lattice/Italian, partitioning, grid method, column method, expanded column method, and multiplying by 10 and 100. The column method is demonstrated for multiplying multi-digit numbers with carrying. Place value is used to explain how to multiply numbers by 10 and 100 by moving the digits left.

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    Nz n 245 Multiplication Strategy Display Posters Ver 1

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    The document outlines several multiplication strategies including array, equal groups, repeated addition, number line, lattice/Italian, partitioning, grid method, column method, expanded column method, and multiplying by 10 and 100. The column method is demonstrated for multiplying multi-digit numbers with carrying. Place value is used to explain how to multiply numbers by 10 and 100 by moving the digits left.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    127 views15 pages

    NZ N 245 Multiplication Strategy Display Posters Ver 1

    Uploaded by

    Mugisha Ernest Isaac
    The document outlines several multiplication strategies including array, equal groups, repeated addition, number line, lattice/Italian, partitioning, grid method, column method, expanded column method, and multiplying by 10 and 100. The column method is demonstrated for multiplying multi-digit numbers with carrying. Place value is used to explain how to multiply numbers by 10 and 100 by moving the digits left.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 15

    Multiplication Strategies

    Array
    Rows and columns with an
    equal amount in each.

    3 x 5 = 15
    Multiplication Strategies

    Equal Groups
    Use the same number of ones
    in each group.

    3 x 5 = 15
    Multiplication Strategies

    Repeated
    Addition

    5+5+5=15

    3 x 5 = 15
    Multiplication Strategies

    Number Line
    Starting from zero, hop 5 at a
    time. Where do you land?

    0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

    1 hop of 5 = 5
    2 hops of 5 = 10
    3 hops of 5 = 15

    3 x 5 = 15
    Multiplication Strategies

    Latice / Italian
    Draw a grid to match the numbers.
    5 2
    Write the partitioned numbers on 3
    top and to the right.
    Draw diagonals. 8
    5 2
    Multiply the numerals.
    Write the answers in the relevant
    1
    5
    0
    6 3
    4 1
    8
    box, writing the digits either side of
    the diagonal. 0 6

    5 2
    Add the diagonals in turn. 1 1
    5
    0
    6
    3
    Carry any “tens” as required.
    9 4
    0
    1
    6
    8
    7 6

    52 x 38 = 1976
    Multiplication Strategies

    Partitioning
    52 x 38
    Multiply each partition together
    and add the products.

    50 x 30 = 1500
    2 x 30 = 60
    50 x 8 = 400
    2x8 = 16
    1976

    52 x 38 = 1976
    Multiplication Strategies

    Grid Method
    x 50 2 Draw a grid.
    Write the partitioned numbers at the
    30 top and left of the grid.

    8
    x 50 2
    30 1500 60
    Multiply the partitioned numbers.

    8 400 16

    1500
    + 60
    + 400 Add the products.

    + 16
    1976

    52 x 38 = 1976
    Multiplication Strategies

    Column Method
    52 Write the numbers above each other
    in columns.
    x 38

    52
    x 38 Multiply 52 x 8
    416

    52
    x 38
    Multiply 52 x 30
    416
    1560

    416
    Add the products.
    + 1560
    1976

    52 x 38 = 1976
    Multiplication Strategies
    Expanded Column Method
    Line up the ones and the tens.
    Multiply the ones.
    Multiply the tens.
    Add the totals together.

    42
    x 6
    12 (2 x 6)
    240 (40 x 6)
    252

    42 x 6 = 252
    Multiplication Strategies

    Column Method
    3-digit x 2-digit carrying not shown

    368 Write the numbers above each other


    in columns.
    x 24

    368
    x 24 Multiply 368 x 4
    1472

    368
    x 24
    Multiply 368 x 20
    1472
    7360

    1472
    Add the products.
    + 7360
    8832

    368 x 24 = 8832
    Multiplication Strategies

    Column Method
    4-digit x 2-digit carrying not shown

    5368 Write the numbers above each other


    in columns.
    x 24

    5368
    x 24 Multiply 5368 x 4
    21472

    5368
    x 24
    Multiply 5368 x 20
    21472
    107360

    21473
    Add the products.
    + 107360
    128832

    5368 x 24 = 128 832


    Multiplication Strategies

    Column Method
    5-digit x 2-digit carrying not shown

    25368 Write the numbers above each other


    in columns.
    x 24

    25368
    x 24 Multiply 25 368 x 4
    101472

    25368
    x 24
    Multiply 25 368 x 20
    101472
    507360

    101473
    Add the products.
    + 507360
    608832

    25 368 x 24 = 608 832


    Multiplication Strategies

    Column Method
    6-digit x 2-digit carrying not shown

    125368 Write the numbers above each other


    in columns.
    x 24

    125368
    x 24 Multiply 125 368 x 4
    501472

    125368
    x 24
    Multiply 125 368 x 20
    501472
    2507360

    501473
    Add the products.
    + 2507360
    3008832

    125 368 x 24 = 3 008 832


    Multiplication Strategies

    Multiply by 10
    Use place value to work out how to multiply by 10.
    674 x 10 = ?
    If you multiply a number by 10, the digits move one place to value to the left.

    Thousands Hundreds Tens Ones

    6 7 4
    Thousands Hundreds Tens Ones

    6 7 4 0
    Zeros will be added after the digits have moved.
    674 x 10 = 6740
    Use place value to work out how to multiply by 100.
    674 x 100 = ?
    Ten Thousands Thousands Hundreds Tens Ones

    6 7 4
    Ten Thousands Thousands Hundreds Tens Ones

    6 7 4 0 0
    Zeros will be added after the digits have moved.

    674 x 100 = 67 400


    Multiplication Strategies
    Multiplying Decimals by 10
    Use place value to work out how to multiply by 10.
    6.74 x 10 = ?
    If you multiply a number by 10, the digits move one place to value to the left.

    Hundreds Tens Ones Tenths Hundredths

    6 7 4
    Hundreds Tens Ones Tenths Hundredths

    6 7 4
    6.74 x 10 = 67.4
    Use place value to work out how to multiply by 100.
    6.74 x 100 = ?
    Hundreds Tens Ones Tenths Hundredths

    6 7 4
    Hundreds Tens Ones Tenths Hundredths

    6 7 4
    If you multipy a number by 100, the digits move two places to the left.

    6.74 x 100 = 674

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